Detailed Product Description

Function: NBS30 series molded case circuit breaker is suitable for circuit of AC50HZ,
rated voltage 690V and below, rated current up to 800A, applied to protect
the circuit facility and electric equipments for buildings when there is overload
or short circuit. 

Frame(A) 125 
Type NBS30-125C SM30-125S SM30-125H SM30-125R 
Rated current In(A)  30,32,40,50,60 ,63,80,100,125 30,32,40,50,60, 63,80,100,125
30,32,40,50,60, 63,80,100,125 30,32,40,50,60, 63,80,100,125 
Number of poles 2 3 2 3 4 2 3 4 2 3 
Rated voltage Ue(V)  AC380-690V DC250  
Rated insulation voltage Ui(V)  AC690V 
Short-circuit Interrupting capacity  AC 690V   5/3 10/5 
500V 7.5/4 15/8 30/15 125/125 
440V 10/5 25/13 50/25 125/125 
400V 10/5 30/15 50/25 125/125 
230V 25/13 50/25 100/50 125/125 
DC 250V 7.5/4  15/8  40/20    
Dimensions(mm) a 60 90 60 90 120 60 90 120 90 
b 155 155 155 216 
c 68 68 68 68 
ca 90 90 90 90 
Weight(Kg) 0.7 1.0 0.75 1.1 1.4 0.75 1.1 1.4 1.7 1.8 
Electrical-operation device(MD)     
Extemal rotary handle     
Automatic tripping device Thermal-magnetic Thermal-magnetic Thermal-magnetic Thermal-magnetic